Liebert XDV manual European Union Fluorinated Greenhouse Gas Requirements, Piping

Piping

6.0PIPING

6.1European Union Fluorinated Greenhouse Gas Requirements

Stationary air conditioning, refrigeration, heat pump equipments and stationary fire protection sys- tems in the European Community market and operating with fluorinated greenhouse gases (f-gas), such as R407C, R134a, R410A, must comply with the F-Gas Regulation: (EC) No. 842/2006 (F-gas). The regulation prohibits, among other actions, venting fluorinated greenhouse gases to the atmo- sphere.

The F-Gas Regulation requires operators to use use all measures that are technically feasible and do not entail disproportionate cost to prevent leakage of these gases, to test for leakage regularly and to recover f-gas before disposing of equipment, as well as during service and maintenance.

Refer to the full regulation for additional details.

6.2System Connection Configuration

If possible, connect the Liebert XDV modules to Liebert XDPs or Liebert XDCs in an interlaced config- uration (see Figure 21). In an interlaced configuration, half the cooling units in an aisle are con- nected to one Liebert XDP or Liebert XDC and the other half in that aisle are connected to another Liebert XDP or Liebert XDC. Such interlaced piping will keep half the Liebert XDV units operating and maintain even cooling in the conditioned space should one of the Liebert XDP or Liebert XDC units fail.

However, in a system with just one Liebert XDP or Liebert XDC, connect Liebert XDV modules in a non-interlaced configuration (see Figure 22).

Figure 21 Typical Liebert XDV piping—interlaced connections

TOP VIEW—NOT TO SCALE

Liebert

XDP/Liebert

Supply A

Return A

Return B

Supply B

Liebert

XDP/Liebert

NOTE: Line size does NOT indicate pipe size difference.

Liebert XDV		Liebert XDV		Liebert XDV		Liebert XDV
	A		B		A		B

Liebert XDV		Liebert XDV		Liebert XDV		Liebert XDV
	B		A		B		A

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